A well-known brokerage firm executive claimed that 90% of investors are currently confident of meetingtheir investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that ina sample of 400 people, 84% of them said they are confident of meeting their goals.Test the claim that the proportion of people who are confident is smaller than 90% at the 0.10 significancelevel.The null and alternative hypothesis would be:Ho: p= 0.9 Hop≥ 0.9 Hopμ ≥ 0.9 H₁ μ = 0.9 Ho: p ≤ 0.9 Ho: ≤ 0.9 0H₁: p0.9 H₁: p < 0.9 H₁ μ< 0.9 H₁ μ0.9 H₁: p > 0.9 H₁: >0.9The test is:two-tailed left-tailed right-tailed oThe test statistic is:The p-value is:Based on this we:Reject the null hypothesisO Fail to reject the null hypothesis(to 3 decimals)(to 4 decimals)

The population proportion p=0.90 The sample size n=400 The sample proportion p^=0.84 The level of…

Answered: A well-known brokerage firm executive…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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